Communication Device for Receiving and Transmitting Ofdm Signals in a Wireless Communication System

1. An electronic device comprising: a communication interface configured to transmit a preamble signal; and receive an orthogonal frequency division multiplexed (OFDM) signal including a plurality of subcarrier signals; a fast Fourier transformer configured to transform the OFDM signal using fast Fourier transform (FFT); and a multiplier configured to adjust each of the plurality of subcarrier signals by a vector obtained based on the preamble signal to optimize reception power.

2. The electronic device of claim 1 , further comprising: an antenna.

3. The electronic device of claim 1 , further comprising: a plurality of antennas.

4. The electronic device of claim 1 , further comprising: a memory.

5. The electronic device of claim 1 , wherein the vector is obtained based on a channel property in accordance with an Eigenvector of a matrix.

6. The electronic device of claim 1 , wherein the vector is obtained based on a channel property in accordance with an Eigenvector of a Hermitian matrix.

7. The electronic device of claim 1 , further comprising: two antennas.

8. A method performed by an electronic device, the method comprising: transmitting, by a communication interface of the electronic device, a preamble signal; receiving, by the communication interface, an orthogonal frequency division multiplexed (OFDM) signal including a plurality of subcarrier signals; and transforming, by a fast Fourier transformer of the electronic device, the OFDM signal using fast Fourier transform (FFT), wherein each of the plurality of subcarrier signals is adjusted by a vector obtained based on the preamble signal to optimize reception power.

9. A non-transitory computer-readable medium including computer program instructions, which when executed by a wireless communication device, cause the wireless communication device to: transmit a preamble signal; receive an orthogonal frequency division multiplexed (OFDM) signal including a plurality of subcarrier signals; transform the OFDM signal using fast Fourier transform (FFT); and adjust each of the plurality of subcarrier signals by a vector obtained based on the preamble signal to optimize reception power.